Plasma Voltage Divider
An electronic circuit for reading voltage from plasma machines.
Plasma machines output up to 200v. We need a voltage divider to read this voltage and use it in projects such as THC. This circuit gives output between 0 and 5v by dividing the voltage for use in controllers such as Atmega.
It was prepared using the Cross Platform and Open Source Electronics Design Automation Suite KiCad 6.0.
- 2 x 5.1v - Zener Diode for D1,D2
- 2 x 2.2 µF/25V - Electrolytic Capacitor for C6,C7
- 2 x 9x12 - 30mH Radial D9.5mm P5.00mm inductor for L1,L2
- 4 x 1nF - Ceramic disc for C5,C2,C3,C4
- 2 x LM358 - op-amp for U1,U3
- 1 x 100R - 1/4w or 1/2w for R5
- 1 x B1212S-1WR3 for BS1
- 2 x 47k - 1/4w or 1/2w for R4,R6
- 1 x 47nF 1KV - High Voltage Ceramic Capacitor for C1
- 1 x HCNR200 - high-linearity analog optocoupler for U2
- 1 x 3k9 - 5W - Power Resistor Ceramic Cement Resistor for R3
- 2 x 100k - 5W - Power Resistor Ceramic Cement Resistor for R1,R2
- 1 x 1x02_P5.00mm_Horizontal - Plasma Negative Electrode Terminal for J1
- 1 x 1x02_P5.00mm_Horizontal - Plasma Positive Work Terminal for J3
- 1 x 1x04_P5.00mm_Horizontal - Power / Output Terminal for J2